Building oil and gas well foundations on a contract basis · Oklahoma

Diemer Construction Co. LLC

Name: Diemer Construction Co. LLC Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Tonkawa, OK · ~34 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 0.0
Avg TCR: 1.9
Industry avg: 0
Fatalities

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The verdict

Diemer Construction Co. LLC runs at 0% of its industry's injury rate - about level with the typical Building oil and gas well foundations on a contract basis workplace, earning a grade C.

Diemer Construction Co. LLC: 0.0 TCR = 0% of Building oil and gas well foundations on a contract basis BLS 1.9 · 3y Form 300A (see methodology below)

Diemer Construction Co. LLC safety composite

Diemer Construction Co. LLC scores strongest on total case rate (tcr) (safer than 100% of same-industry peers) and weakest on fatalities (safer than 53%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

80/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): A 0 per 100 workers

Safer than 100% of industry peers
DART rate: B 0 per 100 workers

Safer than 77% of industry peers
Fatalities: D 0

Safer than 53% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Diemer Construction Co. LLC held a steady TCR band

Diemer Construction Co. LLC's TCR held near 0.0 from 0.0 in 2016 to 0.0 in 2018. Peak filing year was 2016 at 0.0 TCR.

2016=0.0 · 2017=0.0 · 2018=0.0

OSHA ITA Form 300A scorecard

Establishment book 213112 · Tonkawa, OK AT/BELOW-IND · SMALL

Grade C · TCR 0.0 · 0% of ind

DART 0.0 DART
RANK #0/41
PHOTO 2000 St James Place
BOOK 3y book
INJ 0 inj
SIZE ~34 FTE

Nearest TCR peer: 2000 St James Place (0.0 TCR gap)

Read with this employer → · Industry book → · Oklahoma employers → · Look up another →

Schlumberger S

0.1
Halliburton Ca

0.1
This site

0
2000 St James

0
M-I SWACO Head

0

What this shows Diemer Construction Co. LLC averages 0.0 TCR (0% of the Building oil and gas well foundations on a contract basis BLS benchmark).

Diemer Construction Co. LLC TCR series: 2016=0 · 2017=0 · 2018=0 · BLS 1.9

Where Diemer Construction Co. LLC falls in its industry

467 Building oil and gas well foun establishments

Safer than 100% of graded establishments in this industry, whose median TCR is 0.9.

Grade C

More dangerous than peersSafer than peers

Narrower to Oklahoma alone (the establishments it most directly competes with for workers and contracts): ranked #0 safest of 41 Building oil and gas well foun employers in Oklahoma.

Diemer Construction Co. LLC (34 employees, TCR 0.0) among 29 same-industry peers, split at the industry median of 122 employees and a TCR of 0.9

Diemer Construction Co. LLC has fewer employees than the Building oil and gas well foundations on median and a lower injury rate than the industry's median TCR of 0.9. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries	Illnesses	Fatalities
2018	0.0	0.0	0	0	0
2017	0.0	0.0	0	0	0
2016	0.0	0.0	0	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

213112 · OK · Tonkawa

467 Building oil and gas well foundations on a contract basis employers nationwide with a credible TCR · 5,320 rated employers in Oklahoma with headcount on file · 4 employers in Tonkawa, OK · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	2000 St James Place	HOUSTON, TX	0.0 TCR
NAICS-TCR	M-I SWACO Headquarters	HOUSTON, TX	0.0 TCR
NAICS-TCR	Schlumberger Sugar Land South	SUGAR LAND, TX	0.1 TCR
NAICS-TCR	Halliburton Capitol Dr	LAFAYETTE, LA	0.1 TCR
STATE-SIZE	SEABOARD FOODS LP 48	TURPIN	34 FTE
STATE-SIZE	SEABOARD FOODS LP 46	TURPIN	34 FTE
STATE-SIZE	SEABOARD FOODS LP 49	TURPIN	34 FTE
STATE-SIZE	SEABOARD FOODS LP 47	TURPIN	34 FTE
CITY-NEAR	Willow Haven	Tonkawa	36 FTE
CITY-NEAR	Tonkawa Foundry, Inc	Tonkawa	32 FTE
CITY-NEAR	Asbury Machine Corporation	Tonkawa	27 FTE
NAT-TCR	GeoCare, Inc. DBA Home Instead Senior Care	North Olmsted, OH	0.0 TCR
NAT-TCR	Portsmouth NNSY Commissary	Portsmouth, VA	0.0 TCR
NAT-TCR	Columbus Health and Rehab	Columbus, WI	0.0 TCR
NAT-TCR	TX-01	Austin, TX	0.0 TCR
NAT-SIZE	Charm Saw Mill & Yoder Logistics	Sugarcreek, OH	34 FTE
NAT-SIZE	Hartel's/DBJ Waste Collection	Proctor, MN	34 FTE
NAT-SIZE	St. Joseph's Retirement Community	West Point, NE	34 FTE
NAT-SIZE	Brookdale Troy-AL	Troy, MI	34 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2018, 2017, 2016. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.